These entries are queried from radb.net using whois, you can try my project getting these.
:AS53701 route: 38.127.168.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53701 remarks: Trinity University-AS53701-EDIA customer mnt-by: MAINT-AS7922 changed: sean_boulaphinh [at] cable.comcast.com 20110801 #01:11:44Z source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.30.51.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53701 remarks: Proxy add for EDIA customer Trinity Washington University mnt-by: MAINT-AS7922 changed: adam_berg [at] cable.comcast.com 20140603 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source